应用
It is both a source of iodide and a mild reducing agent. It is used as a component in the electrolyte of dye sensitized solar cells. In the field of synthetic organic chemistry, it is used in the preparation of alkyl or aryl iodo compounds. It is employed as a nucleophilic catalyst in the alkylations with alkyl bromide, chloride, tosylate and mesylate. In the presence of acid it forms hydroiodic acid, which is a strong reducing agent. It is useful in producing LugolÂ’s solution (or LugolÂ’s iodne) which finds many applications including starch testing, gram stains, and etching of gold surfaces.

Grade Specifications
Maximum level of impurities: Insoluble matter 0.005%, Loss on drying at 150� 0.2%, pH of a 5% solution 6.0-9.2 at 25�, Chloride and bromide (as Cl) 0.01%, IO₃ 3ppm, PO₄ 0.001%, SO₄ 0.005%, Ba 0.002%, Ca 0.002%, Mg 0.001%, Heavy Metals (as Pb) 5ppm, Fe 3ppm, Na 0.005%

备注
Hygroscopic. It is incompatible with strong reducing agents, oxidizing agents, strong acids and bases. Slowly oxidized in air over a period to form iodine.

基本信息

MDL
MFCD00011405

EINECS
213-659-4

分子式
KI

分子量
166.01

熔点
681°

沸点
1330°

密度
3.12

折射率
1.677

灵敏度
Hygroscopic. Ambient temperatures.

形态
Granular

溶解性
Soluble in water, alcohol, glycerol, and acetone. Slightly soluble in ether, and ammonia.

Merck
14,7643

安全信息

RTECS
TT2975000

TSCA
是